Ice-cream freezer



June 12, 1923. 1,458,855

- E. D. SARGENT ICE CREAM FREEZER June 12, 1923.

E. D. SARGENT ICE CREAM'FREEZER Filed March 3l 1923 2 Sheets-Sheet 2 Patented June 12, 1923.

UNirEo STATES PATE 'r olrrcla. V

EATON D. sAEGEN'r, or NASHUA, NEW HAMPSHIRE, AssIeNoE r.ro THE WHITEMOUN- TAIN EEEEZEE oo., NEW HAMrsHIEE.

INC., or' VNASHUA, NEW HAMPSH1EE, A CORPORATION"or,

' ICE-CREAM FEEEZEE.

Application med March 31, 1923.y serial No. `V629,121. j

T all whom t may concern: Be it known that LEA'roN D. SARG'ENT, a citizen of the United States, Aresiding at Nashua, in the county yof Hillsborough and State of New Hampshire, have invented new and useful Improvementsin yIce-Cream Freezers, of which the following 'is a specification.

This invention relates to ice cream freezers of that type comprising an ice containing tub or bucket, a can and/beaters removably mounted in the tub or bucket and rotatable in opposite directions, and a detachable cross bar or frame carrying-operatingfmechanisrn including a drive shaft and beveled gears foractuating the can and beaters. The present freezer @embodies features of improvement relatively toanalogous devices heretofore adopted in vice 'cream freezers of the type specified, and particularly that shown by Patent No. 1:16567, granted to F.- P. Chandler December 3, 1889.v

The objects ofthe present-invention are, to provide novel means for assembling the beatersin the can-andl also for separating the one beater from the other, to render all parts thereof easily accessible for cleaning purposes, and to generally improve the details ofvconstruction of the several parts of the freezers, including the operating mecha'.

nism and means' for separably applyingsaid mechanism to the top of the tub or bucket. TheY invention consists in lthe preferred construction and arrangement :of the sev-A eral parts which will be more fully herein after described and claimed, reference being made to the accompanying drawings, in which f Fig. 1 is a central vertical sectional view of a freezer embodying the-features ofthe invention and showing in addition partsfof the outer and inner beaters broken away and the.reniaining portion of the said beaters illustrated in side elevation ;V

Fig. 2 is an enlarged transverse vertical section through the upper portion of the can and top therefor together with apart ofther inner beater spindle in section .and the outer beater spindle partially section;

' Fig.` 8 is a perspective view of the beaters on an enlarged scale, 'showing the inner beater detached from the outer beater and a partfof the bottom and lower portion of the can in sectional perspective; .Y

Fig. 4. ,is a. Semmai elevation through th' beaters and a section transversely 4through a portion of the'bottom vof the can, showingthe inner beater partially removed from `the outerV beater, the beaters being broken through at aninterniediate point; and

5 is a detail top plan view of. a bearing plate and a part-of the operatingmechanism .carrying frameat the top of the tub; The numeral designates thefree'zertubl or bucket of'w'ood or other suitable material having 'on the inner. sidel of its bottom 6 a step or bearing 7 consisting of a'flat plate with an upwardly projecting tapered stud or bearing boss 8.. At the top of theftub or bucket 5 a'bearingplate 9 isr secured and is suitably fastened, as for insta-ncebynieans of bolts 10, to vthe tub or bucket. This bearlng plate is formed or otherwise `provided With an openhinge bearing 11 prejecting above they upper vedge of the tub `or `bucket and comprising oppositelydisposed arms 12 having inwardly projecting studs 13,-y as clearly shown by'Figf. .At a diametricallyy y opposite point the tub or. bucket is provided with a pivoted hook oatchlh-which .is suit-` ably eonnected to thev tubl and in its preferred construction is formed with a bearingv boss 15 that extends into a recess 16a pivot pinv 17 passing through the boss vand the wall of the tub 0r bucket and secured orheaded over relatively to both the outer sideof-the lower portion of the catch-andthe inner sur face of the Wall of the tub or bucket.

The cross bar or frame is of `skeleton `form,

andv essentially of the structure shown by.`

the U.' S. Patent No. 416,567,=hereinbefore noted, and comprising al'central vsleeve'bear-4 ing 18 joined to an annular-web 419.l in V the saine manner asv illustrated by said patent.

A drive shaft 2O isfmounted` in' sleeve bearj ings 21 and '22 located in a. line vthat passes betweenthe two studs 13 fof the varms 12 of;

' the bearing plate 9, the bearings 21 being through the gear 25 and communicates with a lower angular bearing bore or socket 28 continuing through" the lower end of the hub. The lower end of the hollow hub 26 around the bore or socket 28 is recessed, as at 29, for a purpose which will be present-ly explained, The lannular web 19 is formed with a circular horizontal seat 30 on its upper side upon which is mounted the horizontal laterally projecting flange 31 of an arched or domed shield or guard 32 that extends over and covers t-he several gear wheels above'the cross barl or frame 23. The lateral flange 31 of the domedshield is provided with perforations or screw holes through which are inserted metal screws or analogous devices 33, which engage screw sockets in the annular web, and whereby the domed shield may be conveniently and quickly removed and replaced as occasion demands. By covering and shieldino' the gears as explained, there is no liability of the fingers or parts of garments of the operator being accidentally caught therein, and moreover, the ice or freezing mixture can be inserted in or removed from the tub or bucket without liability of clogging the gears. rllhe outer bearing 21 at one extremity of the fra-me 23 has a lower catch lip or projection 34, which is adapted to removably engage under the studs 13 of the arms 12 of the bearing plate 9, the inner ends of these studs being spaced far enough apart to permit the shaft 2O to be continued outwardly beyond the side of the tub or bucket to receive on operating crank handle 35, which may be removably applied to the outer end of the shaft. The opposite extremity of the frame 23 is projected in the form of a shouldered catch plate or extension 36 over which the hook catch 14 is adapted to engage, and to uphold this extremity of the frame 23 in stable position when applied, the upper edge of the side ofthe tub or bucket is formed with a slot 37 which is engaged by a. depending lug or key 38 formed as a part of the plate or extension 36, and whereby the extremity of the frame engaged by the hook catch 14 will be prevented from working loose or out of place and thereby maintain the operating mechanism in proper associated relation with the remaining parts of the freezer for actuating the latter in a mannerA which will be hereinafter described. It will be understood that. the revolving parts ofthe operating mechanism may be suitably lubricated as found necessary.

The can 39 isof the usual metal formation and may vary in capacity in accord ance with the general proportions and dimensions of the completefreezer. The bottom 40 ofthe can has a cent-ral socket 41 fixed therein and Vprovided with a down'- wardly openingV socket recess 42 into which the taperedstub or bearing boss Sof the lstep or bearing 7 secured to the bottom of the tub or bucket is adapted to project asa pivot or central lfulcrum means for the can. The socket 41 is also formed with an upwardly projecting angular stud 43 in vertical alinement with the socket recess 42. At the upper open end and on the-inner side of the cam 39is a contact lug 44, which is adapted to be engaged by a. depending operating lug 45 integrally formed with a top or cover 46 for the can. The top yor cover 46 is detachable and has a peripheral flange 47 to loosely fit over the upper open end of the can 39 and also has a central top open'- ing 48 surrounded by gear teeth 49, which provide an annular gear means integrally formed with the top or cover 26 tomesh with the beveled gear wheel 24 onf the inner end of the shaft 20. The top or cover 46V isof conical formation and around the. central opening 48 is stepped or shaped to Aconform to the lower contourI of the sleeve18'and hollow hub 26, ay flange-49a surrounding the top opening 48v and extending into the re-v cess 29 in the lower end of the hub-26 around the socket bore 28. Through the medium of the-top or cover 46, which is actuated by the gea-r wheel 24 engagingrthe gear teeth 49, the can 39 is rotated by engagement of the lugs 45 and 44.

rlhe agitating means of the improved` freezer comprisesan o-uter beater or stirrer 50 andan inner beater or stirrer 51. The outer beater or stirrer consists of a substantially rectangular frame composed of integral parts preferably made' of nonecorrosive metal, or metaltreated to resist corrosion, and having top and bottom cross members 52 and 53'and vertical side members 54. The' top cross members comprise centrally coinciding arms 55 which have a reverse angle or torsion and the lower cross member 53 is likewise composed of opposite arms 56 with a` more pronounced reverse angularity or torsion. The vertical side members` 54 are also disposed at reverse angles, andlthis valriation in the angular formation ofthe cross members and side lmembers is of material advantage in the beating and stirring action of the outer beater. The side members 54 have reversely arranged vertically dis-y posed'scrapers 57 looselyattached to ears 58 projecting outwardly from said members, said scrapers being preferably formed of wood and having beveled scraping edges 59, yto operatev closely with relation to the inner surface of the side of'-` the can 39 and rounding the opening 67 through theA collar.A '40 to, 'the top cross member' 52 of the outer beater'and projects upwardly a suitable distance toprovide'an operating stem 60, which 1 is longitudinally ribbed for a portion'offitsv length, as at 61,'-tolighten the same and also.

conserve its necessary strength, and' yhas a smooth vcylindrical portion 62 with an angular extremity 63 :rising therefrom, the. cy-v lindrical.. portion engaging 'the' opening48' of the topior` cover 46 and the vangular eX-' tremity 68iitting in' the 'lowersocket 28 yof the hub 26, the said vsocket having a contour similar to the extremityl 63 and whereby the hub driven by lthe gearl 2.5'from `the gear wheel 24 on the inner l endof lthe .shaft 2Q will effect a positive Arotationiof the stein and the outer beaterO with its Scrapers orscraper'members 57. f The angular -eX- tremity 63 .and -smooth cylindrical bearing portion62 ofl the stem 60 separably extend` through and into the openingf48 of the top 4 or cover'46 and the uppereiid of the angular extremity* 63 projects into'vtlie hollowportion 27vof the hub26 abovefthe socket 28, so thatthe operating gear mechanism'` maybe read-ily removed-or disengaged from the upperendv or entremityf'63 lof/.the stem and the '-top or cover=46subsequentlyeasily drawn upwardlythereover, andy conversely, the assemblage of these parts maybe as readily accomplished. Depending below the center o f the top'cross member 52 vof the outer beater 50 isa stud 64, and inthe center ofthe lower `cross member 5.3 and integrally formed with the arms 56 is a/ho-rizontallfy disposed bearing collar 65 having an annular shoulderl66 therein. at a suitablev distance bellow the rupper edge of` said collar and sur'- A partbf the wall ofthe collary 65. above the shoulder '-66 is cutawayor formed with a slot768 which has a depthxslightlyfless thanthe depth of the annular shoulder 66k below 'thelu'pper edge ofv the'collarr65y1as clearly shown by Fig. 4. The remaining.-

of the rod 69 lis formed with a combined cou-y pling vand bearing head-y 72 comprising a;

lower socket 73 having an angular opening 74 extendingvertically .therethrough and. integrally formed with ya yoke 75 with a transverse opening 7 6,- the yokefbeing continuous with the lower extremityof the rod 69. The opening 76 is yover. the socket' opening 74 and the latter has an angular contour,.the `pur-- poise of this construction beingfto permit` easy cleaning' of the lowerend ofthe rod 69,"an`d lprevent accumulation and lpackingof material therein, particularly sugar, with obvious advantages in maintaining the inner beater in good working. and cleanly condition.'v It will be readily understood; that thelforniation of the combined coupling. or*

bearing and socketat the lowergendof the rod-69 with the open structure just explained will facilitate thegremoval of anyA material which would otherwise 'have a tendencyitol y pack or lodge. therein. v.The socket 731svr Substantially square in its contour vandinay,` berno-ved outwardly and inwardly through.

the'slot 68, to respectively separatethe inner beater 67 vfrom the outer beater and asseinble the said-inner Vbeater with y'fthe'iouter c beater. Vhen the head 72 at'thelower end of the rod .is in engagementwitli` the bear ing collarl 65,.portions of the lower 'edge ofy the socket 7 3 bear on parts of the'annular shoulder 66, and the lower head 72 with the.

remaining parts of 4the -inner beater are maintained yin operative associatedrelation with the outer beater by theangularl stud 43l of the socket `41 securedto- `the. center of the bottom 40. of thecan 39,' as clearlyy sho-wn by Fig. 1, and bythus assembling .the *innerbeater relatively tothe outerbeater, the said inner beater will rotate with or in the saine directionas thecan `391;.f`whereas the outery beater. 50 will rotatein lda. reversev directionw" within the'can.v Thesocketl71y atV the upper end ofthe rod 69 of the inner'beateris vof .greaterr deptli'than'thelengthof thestud' 64 and the said stud projects only partially into'thissocket,.and by this means the rodv and. inner beater as awhole may beelevatedr e v 'a suiicient ydistance to permit thel'ower edge of the socket 7 3l ofthe head 724 to' clearthek shoulderl andl register with vthe slot `60, to

permit the said 'in'nerbeater to be detached or separated from the outer beater, 'as shown` l by Fig. V4.v Thev inner Ybeater-when removed is disposed at an anglev of inclination, and

whenfth'is beater: isfre-assembled in opera tive relationto the outer beaterjitwill-likejwise `be disposed at an' angle and l,set `in true vertical lpositionlwith the lower edge ofthe socket 73-of the-head'72 `bear-ing on they shoulder 66 yofthe collar 65 in the-manner hereinbefore explained` The distance:l bei tween the surface ofthe vcollar 66 andthe lower endl of the: stud 64is' less 'than vthe length of thefrod 69, h'ead72`a'nd :socket 61, and there is therefore lnovliability of the iiiner beater becoming :accidentally vdisengaged from the outerbeater during the operation of these active-'elementsv lof* the ice creamv freezer. Means are (pro-vided for preventing thefouter and inner beaters fronibecoming i l disengaged from the stud 48.of the -lowei' socket 41 and consistso-f oppositely pro-1l 'y l 130 jectiiig studs or lugs 77 formed as parts of the stem GO at the lower terminal of the cylindrical bearing surface 62, the upper contacting edges of these stops or lugs .being slightly' below the inner central upper portion of the top or cover et@ when the latter is applied to the can at such close rel-ation to the upper part of the cover as to prevent the stem from moving vertically any ma;- terial extent, or a less distance than would be necessary to effect a separation O-f the collar from the stud 413 and, likewise, the socket Tl of the head 72 at'the lower end of the beater from the saine stud, and moreover, this stop means will prevent separation'of the stud 64 from the socket 7l at the upper end of the rod or sectional part of the spindle of the two beaters. rIhis relationshipI of the stops or lugs 77. andthe upper part of the top or cover etfis. clearly illustrated by Fig. 2, and it will be seen that the normal distance between the inner surfaceV of the upper portion of the top or cover and the upper edf-res of the stops or lugs 77 is less than that which would be necessary to effecta separation ofthe united inner and outer beaters, or the inner beater from the outer beater. Moreover, the proportions of the parts are such that when the socket 42 aty the center of the'bottom '-10 of the can 89.

engages the stud or bearing boss S projecting up from the bottom 6 of the tub or bucket 5, disengagement and displacement of the can 89 during its operation will'be obstructed. This obstruction to displacement ofl thecan during operation within the tub is'due to the contiguous position of the upper edge of the collar 4:0 with the upper terminal wall of the recess 29 in the bottom of the hub 26.

From the foregoing description the operation of the iinprovedl freezer will be understood, and it will be seen that the operating mechanism is all carried in one unit and readily applicable to and removable from the top of the tub or bucket, and, likewise, the cover may be applied over the stem 60 after the beaters have been inserted in the can in operative position, the cover holding the beaters in proper vertical position within the can. As hereinbefore explained, the operating mechanism carried by the crossbar or frame may be readily applied over the upwardly projecting angular extremity 6B of the steam 60, and after the said frame or cross bar is locked down on the top of the tub, the shaft 20 may be rotated to effect rotation of the can and the ifi-eases or cover t6-removed, to permit withdrawal of the beaters 'and the-frozen contents ofthe can may then be packed down and the cover replaced-on the can, to maintain the frozen? mixture in proper 'condition as described.A It will also be understood that all the parts of the improved.freezerexceptthe tub or bucket .5 will be formed of metal which convenience'in applying and. removing the frame or cross bar carrying the operating mechanism for actuating the can and beaters thereinzas disclosed in the patent hereinbefore noted isY present in the improved structure.v

What isclaimed as'new is:

l. In an ice cream freezer, a tub, a canl rotatably and `removably mounted in the tub, avdouble rotating' agitatingg and mix-ing means removably mounted in the can and'` consisting of an outer beater and an inner beater, the inner bea-ter being loosely: and as a whole Aconfined within and laterallyv separable from the outer beater, and mechaf nism supported by the tub in separable relation to the can and agitating and mixing means for operating1 the latter.

2. In an ice cream freezer, a tub, a can rotatably and removably mounted in the tub, a rotating do-uble agitating and mixing means removably mounted in the can and consistingof an outer beater, and aninner beater eachbeater having a section of an;

ope-rating spindle as a part fixed thereto,

the spindle sect-ion ofthe innerv beater being less in lengthy than and laterally separable from the outer beater, and mechanism removably, associatedwiththe can and agitating and mixing means for-'operating the latter.

3. In. an ice cream freezer, atub,a can rotatably and removably mounted in the tub, a rotating double agitating and mixing means removably mounted in the can and consisting of an outer beater and an inner beater, each beater having a section of an operating spindle as a part fixed thereto, the spindle section of the outer beater extending upwardly from the top of the latter and the` spindle sec-tion of the-inner beater beingless inlength than and laterally separable from theV outer-beater, and mechanism removably associated with thecan and beaters forv operating the' latter.

4f. In an ice cream freezer, a tub, a can rotatablyv and removably mounted in the tub, a rotating doubleagitating and mixing means removably mounted in the can and consisting ofvan outer beater and@ an inner beater each comprising an independbeater, and an inner beater confined as a whole between th'e upper and lower memf -ed therein and consisting of an outer beater .ent .fixed par-t of a sectional. spindle, the

outer beater having upper andlowerjmemj bers provided with, means for separably holding the spindle sectiony of the inner beater as a whole within "the outerbeaterv between Ithe upper and lowerm'einbers of the latter, and mechanism removably associated with the canand agitating andmixing means for operating the latter.A S

5.*The combination with .the can of an ice cream freezer, of Va rotating double agitating and mixing means removably mountfrom the upper and ylower portions of the x said outer beater. A

6. An agitating and mixing meansadapted to be rotated, comprising 'an outer beater having scraper bars .at opposite sides attached thereto and upperand lowerin'eni-` bers, a stein tixed to andv projecting upf. wardly from theupper member of the outer bers of the outer beater. vand-having a spindie with means at its upper and lower extremities lfor separably engaging the upper and lower members of the outer beater and laterally removable from the latter.

7 The combination with a can having a lower stud projecting upwardly thereinto, of an agitating and mixing means removably mounted in the can and comprising an outer beater with a lower collar yand an upper depending stud, an inner beater hav-v ing a lower socket headv to removably engage the collar and an upper socket tol separably engage the 1 stud, and inea-ns foroperating the can and the agitating yand mixing means as a whole.

8. The combination with a can having. a lower stud, of an agitating .and mixing means removably mounted in the can and. comprising an outer beater with a llower apertured and shouldered collar to t over the said stud anda-n upper stud depending from the center thereof, an inner beater having a rod with beating blades projecting therefrom and formed with a sockethead at its lower end to removably engagethe collar at the lower portion of the outerv beater and the stud of the can, said rod alsov having a socket at its upper `end for removable engagement with the stud ofthe outerA beater, and meansfor operating the can and beaters.

9. The combination with a can having'a stud projecting upwardly from the'center of the bottom thereof and a removable collar provided with means for rotating the can,

.anfagitating andA mixing meansconsisting an outer beater with a lower slottedcolla'r and-anupper dependingstud, an inner `beater l having arod with beating blades projecting 4therefrom and va vlowersocket headr to engage.

the stud-of the Canand an upper. socket to engage the studof the. outer. beater, the inner beater beingV vertically movable within the "outer beaterand the lower end laterally sliiftable through the slotted. collar tol refinove the Vinner beater from the outerv beater, land means foroperating the can and beaters. ,f .i j 10. In an 'ice cream freezer, atub, a can 'rotatably mounted within y the r'tub l andV lhaving a 'removable cover', `an agitating and mixing `meansrotatably.'Zand removablyy l lmounted yin.. the can' andv consisting ofl outer beater .with a1- lower collar to engage I" the stud ofthe canaii'inn'er beater having its upperjextremity removably engaging the top `portion *of thel outer beater and having through forcleaning purposes, the socket vhead being laterally movable from the collar of' the outer lbeater-and also adapted toengage the can stud, and means for operating the can. and beaters. l

ll. In an ice cream freezer, a tub, ar can' rotatably and removably mounted in the tub,

a double rotating agitating vand mixing means removably mounted in tlie can and consistingvof an outer heater and an inner` beater, the inner beater beingy looselyand as v a wholeconfined within .theouter beater and 'a lower socket head with an opening therej vertically movable within the latterl to per! mit said inner beaterto be laterally separated from the outerbeater, the outervbeater being supported by thev top and bottom portions of the can yand the ,inner beater being supported by the outer beater, and, mechanism supported by the tubin separable'jrelation i to the'can and 'agitat-ing and mixing .means v for operating the saidy can and v"means 12. Anagitating and'mixing meansfor an ice cream can and the like, consisting of. an

outer beater having a fixed operating stein f rising from the center of the top thereof,` and an innerL beater comprising a central stein section of less length than the distance between the top and bottom portionsl of the outer Y beater and carrying beater blades, the inner beater being vertically movable within thev i outer beater and laterally separable from. y I

the latter.

13. A double rotatable agitating and mixingmeans for removable di-sposition in-v an* rice cream can and the like, consisting of an'V 'i buter beater having upper and lower endsv V the upper end member having an operating and side members of integral construction,

stem xed thereto and extending above the same, and an inner beater having a' centrallyv arranged'stem withbeater blades yand vertically shiftable rbetween theu-pper andlovver ends of the beater and laterally movable intoand outwardly from the said outer beater, `the upper and lowerv ends of t-he stem of the -ing means for removable mounting in an ice cream can and the like, consisting of an outer beater having reversely arranged serapers loosely attached to opposite sides, and an inner beater having a spindleseetion and blades and mounted Within the outer beater, the said inner beater being laterally removable from the outer beater by having the spindle section of the inner beater of less length than the distance between the upper andlou'er portions oit the outer beater for vertieal movement Within the latter.y

15. ln an iee cream freezer, a tub having bearingI plate at the top portion thereof provided with, inwardly projecting studs tively engage under the said studs in a removable manner and the hook catch, the said gearing sup-porting frame including a drive shatt whiehprects,outwardly between the Said studs and provided with an operating handle, a can With a cover mountedlin the tub, and'agitating means removably mounted in the can and 1n part projecting through ythe Cover, the gearing of the frame engaging 4the projecting part of the agitating means and the cover Jfor rotating said can and agi- Ytating means.' 

